The standard applies to all types of chairs used in office spaces. The NPR 1813 explains which type of office chair can be used for which purpose in the office. The standard does not apply to chairs intended for special work (for example for work at counters, counters and machines, which is also carried out while standing) nor to armchairs, stools and other chairs that do not belong to the category mentioned above.
NEN 1812-1990 history
1990NEN 1812-1990 Ergonomics - Ergonomie requirements for office chairs Requirements for dimensions and design - Measurement- and test methods